Bump validator from 13.15.15 to 13.15.20 in /alcs-frontend

Bumps [validator](https://github.com/validatorjs/validator.js) from 13.15.15 to 13.15.20.
- [Release notes](https://github.com/validatorjs/validator.js/releases)
- [Changelog](https://github.com/validatorjs/validator.js/blob/master/CHANGELOG.md)
- [Commits](validatorjs/validator.js@13.15.15...13.15.20)

---
updated-dependencies:
- dependency-name: validator
  dependency-version: 13.15.20
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

alcs-frontend/package-lock.json

@@ -39,7 +39,7 @@
     "rxjs": "~7.8.2",
     "source-map-support": "^0.5.21",
     "tslib": "^2.8.1",
-    "validator": "^13.15.15",
+    "validator": "^13.15.20",
     "zone.js": "~0.14.4"
   },
   "devDependencies": {